Heathkit SB-1000 - Page 41

Heathkit
Me Refer to Detail 6-8D and use the following pro-
cedure to mount a tube socket onto the main
chassis at V1:
Slide a 1/2” spacer onto the end of each
screw at BG, BH, BJ, and BK.
Slide a #6 fiber flat washer onto the end
of each screw at BG, BH, BJ,and BK.
Slide the tube socket onto the end of the
four screws. Make sure the side of the
socket that has two lugs is toward the
rear edge of the main chassis as shown.
Slide a #6 fiber flat washer onto the end
of each screw at BG, BH, BJ, and BK.
Use #6 lockwashers and 6-32 nuts to secure
the socket. Do not overtighten the nuts.
6. Discard the brackets that were supplied
with the tube socket.
A C29: Refer to Detail 6-8E and use a 6-32 x 1/4”
of
screw and a #6 lockwasher to mount a 170 pF
doorknob capacitor to the main chassis at C29.
NOTE: It does not matter which way you mount
this capacitor.
C28: Similarly use a 6-32 x 1/4" screw and a #6
lockwasher to mount a 500 pF doorknob capaci-
tor to the main chassis at C28.
Use 6-32 x 3/16" screws to mount #6 solder lugs
to the tops of doorknob capacitors C28 and C29.
Position the solder lugs as shown in the
Pictorial before you tighten the screws.
Refer to Detail 6-8F and use an 8-32 x 1/4” screw
to mount a 1" nylon spacer to the main chassis
at BL.
Similarly use an 8-32 x 1/4" screw to mount a 1"
nylon spacer to the main chassis at BN.
Refer again to Detail 6-8F and use 8-32 x 1/4"
screws to mount #8 solder lugs to the tops of the
spacers at BL and BN. Position the solder lugs
as shown in the Pictorial before you tighten the
screws.
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3
Page 43
Refer to Pictorial 6-9 while you perform the
following steps.
wo C22: Cut both leads of a .01 pF, 500-volt ceramic
y
capacitor to 1/4". Then connect the capacitor
between the eyelets of terminal strip BE lugs 1
(S-1)and 2 (NS).
C21: Cut both leads of a .01 pF, 500-volt ceramic
capacitor to 1/4”. Then connect the capacitor
between the eyelets of terminal strip BE lugs 2
(S-2)and 3(S-1).
Prepare a 7-7/8" medium black stranded wire.
Then connect one end of the wire to terminal
strip BE lug 1 (NS). The other end will be
connected later.
Prepare an 8-3/8" medium black stranded wire.
then connect the wire to terminal strip BE lug 3
(NS). The other end will be connected later.
C23: Cut one lead of a .001 pF (1000 pF), 6000-
volt ceramic capacitor to 1". Slide a 3/4" length
of sleeving onto this lead. Then connect the end
of this lead to terminal strip BE lug 2 (S-1). The
other capacitor lead will be connected later.
NOTE: Two leads were previously soldered in
the eyclet of this terminal strip lug.
C18: Cut both leads of a .01 uF, 500-volt ceramic
capacitor to 1/4". Then connect the capacitor
between the eyelets of terminal strip BF lugs 3
(S-1) and 4 (NS).
C19: Cut one lead of a .01 pF, 500-volt ceramic
capacitor to 1/4" and the other Iead to 1-1/8".
Slide a 7/8" length of sleeving onto the longer
capacitor lead. Then connect the capacitor
between the eyelets of terminal strip BF lugs 1
(S-1)and4 (S-2).
Position capacitors C18 and C19 so they are at
least 1/8" away from the chassis. The edge of
the rear panel will have to fit between these
capacitors and the main chassis when you
mount it later.
WV Prepare a 2" and a 4-1/4" medium black strand-
ed wire. Use these wires in the next two steps.
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